1. T.E. MINI PROJECT
Design and Fabrication of Fly-by-Wire
System for Flight Control
JUBIN GOEL (T8023065)
ANKIT KARMAKAR (T8023069)
YOGESH SONULE (T8023155)
Internal Guide – Prof. Alwin Anuse
3. HOW DOES IT WORK
Input from various Pilot Controls:
Steer Column
Foot Pedals
Throttle Control
is taken in the form of analog inputs, converted
to electronic signals which is sent via the Flight
Computer to the actuators controlling the Flight
Surfaces.
4. CURRENT TRENDS
Almost all Military and Civil Aircraft are now using
this technology.
State-of-the-Art military aircraft like the F-22 Raptor
of the USAF and milestone civilian aircraft like the
A380 from Airbus rely on highly advanced FBW
systems.
Power-By Wire
Fly-By Optics
5. SCOPE
Fly-By Wireless
FBW systems are under test for incorporation with
REMOTE FLIGHT ASSISTANCE SYSTEMS in case of
emergencies.
More sophisticated and ‘SMARTER’ Flight Computers
for increased performance and safety.
6. The 3 Critical Flight Parameters that we
need to control
YAW MOVEMENT
PITCH MOVEMENT
ROLL MOVEMENT
7. How do we do it?
We have attached 3 servo-motors with three wooden
‘wings’.
By sending precise ON-OFF Pulse trains to the servo,
we plan to move the Elevators and the Rudder of the
model, to and fro of the stable position.
The magnitude and direction of these movements will
be determined by the use of 6 Push-switches.
9. SYSTEM ALGORITHM
START
INITIALIZE I/P & O/P OF µC
INITIALIZE ALL SERVOS TO THEIR INITIAL
POSITIONS
SCAN ALL JOYSTICK KEYS
GET KEYCODE OF RESP. KEY PRESSED
ROTATE SERVOS TO DESIRED POSITIONS
&
HOLD UNTILL KEY IS RELEASED
10. COMPONENT SELECTION CRITERIA
µController: ATMEGA8
1. 3 PWM control required
2. Compactness of circuit
3. Resources available – availability of hardware and
software needed for programming and construction of
ckt.
4. 6 Analog Inputs
5. Cost-effective
11. Actuator: SERVO MOTOR – FUTABA S3003
1. Positioning Control by rotation around an axis
2. Precise control over rotary movement
3. Reasonable power consumption
4. Lightweight
5. Sufficient Torque
6. Market availability
in case of Damage or needed replacement.
COMPONENT SELECTION CRITERIA
Replaces the conventional manual flight controls of an aircraft with an electronic interface
WHY FLY-BY-WIRE
Flight control is now easier, and physically less strenuous and challenging.
Mechanical and Hydraulic Systems are prone to damage in combat. FBW ensures reliability and good functionality despite damage to MILITARY AIRCRAFT.
In case of malfunction, easier to repair/replace.
Allows AI interference and computer assisted control for better and safer operation of aircraft.
2.Power-By Wire: The new flight control subsystems package includes a power-on-demand electrical system and electric actuation (rather than the traditional, large, heavy and difficult-to-maintain hydraulic actuation) of flight control surfaces. The main adavantage of this system is that it can reduce the weight of the plane by almost 700 pounds.These systems are being utilized on military jest such as the F-16 fighter jet.A wireless system also has been developed.
3.Fly-By Optics: Fly-by-optics, also known as fly-by light, is a further development using fiber optic cables. Since fiber optic cables are the new and most advanced communication cables, they can prove to be highly convenient during operation of the control system. The fiber optic cables are highly durable and lightweight. Hence, these cables help in reducing the vehicle’s weight to a considerable extent.
1.Fly-By Wireless: Wiring adds a considerable amount of weight to an aircraft; therefore, researchers are exploring implementing fly-by-wireless solutions. Fly-by-wireless systems are very similar to fly-by-wire systems, however, instead of using a wired protocol for the physical layer a wireless protocol is employed. In addition to reducing weight, implementing a wireless solution has the potential to reduce costs throughout an aircraft's life cycle.
REMOTE FLIGHT ASSISTANCE SYSTEMS – control aircraft from outside the aircraft.
